sends request twice

void http::steam_login(const QString &uname, const QString &pwd)
{
    app::log("Started Steam login process for \""+uname+"\"",1);
    this->login_state = 0; //log out
    this->login_storage.push_back(uname);
    this->login_storage.push_back(pwd);
    delete this->cookieJar();
    this->setCookieJar(new QNetworkCookieJar());
    QNetworkCookie steam_timezone;
    QNetworkRequest request;
    steam_timezone.setDomain(".steampowered.com");
    steam_timezone.setPath("/");
    steam_timezone.setName("timezoneOffset");
    steam_timezone.setValue((QString::number(app::core::getTimeZoneOffset().toInt() * 3600) + ",0").toUtf8());
    this->cookieJar()->insertCookie(steam_timezone);
    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded; charset=utf-8");
    request.setUrl(steam_login_base+"getrsakey");
    this->post(request, QString("username=%1&l=english").arg(uname).toUtf8());
    QObject::connect(this,SIGNAL(finished(QNetworkReply*)),this,SLOT(login_reciever(QNetworkReply*)));
}
void http::login_reciever(QNetworkReply* data)
{
    QByteArray buffer = data->readAll();
    QJsonDocument json_buffer = QJsonDocument::fromJson(buffer);
    QNetworkRequest request;
    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/x-www-form-urlencoded; charset=utf-8");
    switch (this->login_state)
    {
    case 0:
    {
        if (!(json_buffer.object().value("success").toBool()))
        {
            app::log("Login failure at stage 1 for \""+this->login_storage[0]+"\"",1);
            QObject::disconnect(this,SIGNAL(finished(QNetworkReply*)));
            this->login_state=0;
            this->login_storage.clear();
            break;
        }
        this->login_storage.push_back(json_buffer.object().value("timestamp").toString());
        this->login_storage.push_back(app::get_encrypted_password(this->login_storage[1],json_buffer.object().value("publickey_mod").toString(),json_buffer.object().value("publickey_exp").toString()));
        request.setUrl(steam_login_base+"dologin");
        this->post(request,QString("username=%1&password=%2&rsatimestamp=%3").arg(this->login_storage[0],percent_encode(this->login_storage[3]),this->login_storage[2]).toUtf8());
        this->login_state++;
        break;
    }
    case 1:
    {
        if (json_buffer.object().value("message").toString()!="SteamGuard")
        {
            app::log("Login failure at stage 2 for \""+this->login_storage[0]+"\", message: "+json_buffer.object().value("message").toString(),1);
            QObject::disconnect(this,SIGNAL(finished(QNetworkReply*)));
            this->login_state=0;
            this->login_storage.clear();
            break;
        }
        this->login_storage.push_back((app::query(QString("Enter Steam Guard code for \"%1\": ").arg(this->login_storage[0]))).toUpper());
        this->login_storage.push_back(json_buffer.object().value("emailsteamid").toString());
        request.setUrl(steam_login_base+"dologin");
        this->post(request,QString("username=%1&password=%2&emailauth=%4&emailsteamid=%5&rsatimestamp=%3").arg(this->login_storage[0],percent_encode(this->login_storage[3]),this->login_storage[2],this->login_storage[4],this->login_storage[5]).toUtf8());
        this->login_state++;
        break;
    }
    case 2:
    {
        if (!(json_buffer.object().value("login_complete").toBool()))
        {
            app::log("Login failure at stage 3 for \""+this->login_storage[0]+"\"",1);
            QObject::disconnect(this,SIGNAL(finished(QNetworkReply*)));
            this->login_state=0;
            this->login_storage.clear();
            break;
        }
        this->login_storage.push_back(json_buffer.object().value("transfer_parameters").toObject().value("token").toString());
        this->login_storage.push_back(json_buffer.object().value("transfer_parameters").toObject().value("webcookie").toString());
        request.setUrl(steam_login_base+"transfer");
        this->post(request,QString("steamid=%1&token=%2&remember_login=%3&webcookie=%4").arg(this->login_storage[5],this->login_storage[6],"true",this->login_storage[7]).toUtf8());
        this->login_state++;
        break;
    }
    case 3:
    {
        QNetworkCookie temp_cookie;
        QList<QNetworkCookie> cookies = this->cookieJar()->cookiesForUrl(QUrl(steam_login_base));
        for (int i=0; i<cookies.size(); i++)
        {
            temp_cookie=cookies[i];
            temp_cookie.setDomain(".steamcommunity.com");
            this->cookieJar()->insertCookie(temp_cookie);
        }
        this->login_state++;
        QObject::disconnect(this,SIGNAL(finished(QNetworkReply*)));
        this->login_storage.clear();
        emit login_complete();
        app::log("Successfully logged in as \""+this->login_storage[0]+"\"",1);
        break;
    }
    data->deleteLater();
    }
}